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Chemistry exam 02
| Question | Answer |
|---|---|
| Atom | smallest particle of an element |
| Whats daltons first atomic theory? | All elements are composed of tiny indivisible particles called atoms |
| whats daltons second theory? | atoms of the same element are identical. the atoms of any one element are different from those of any other element |
| whats daltons third theory? | atoms of different elements can physically mis together or can chemically combine in simple whole-number ratios to form compounds |
| whats daltons fourth theory? | chemical reactions occur when atoms are separated, joined, or rearranged. Atoms of one element, however, are never changed into atoms of another element as a result of a chemical reaction |
| Who discovered the electron? | Dalton |
| What charge is an electron? | negative |
| What was daltons experiment for discovering the electron? | Cathode Ray tube |
| Who discovered the nucleus? | Rutherford |
| What was rutherford s experiment? | The gold foil experiment |
| What was rutherford s model? | nuclear model |